Indexing device.



Patented sept.. 2'?, 1910.

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B. F. MORRILL.

INDEXING DEVICE.

APPLICATION FILED JAN.16,1908.

Patented Sept. 27, 1910.

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INDEXN G DEVICE.

APPLIOATION FILED JA-N.1s,1sos.

Patented Sept27, 1910.

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B. I'. MURRILL.

INDEXING DEVICE.

APPLIUATION FILED JAN.16,1908.

Patented Sept-27, 1910 6 BHEBTB-BHBBT 4 @Rummy B. I. MORRILL.

INDBXING DEVICE. APPLIOATION FILED JAN.16,1908.

Patented Sept.27, 1910.

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tUN 1TB@ STAF @FFlCE BYRON F. MORRILL, OF NASHUA, NEW HAMPSHIRE.

INDEXING DEVICE.

T o all whom it may concern.'

Be it known that I, BYRON F. MoRRiLL, a citir/ien of the United States, residing at Nashua, in the county of Hillsboro and State of New Hampshire, have invented certain new and useful improvements in indexing Devices; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to indexing devices for gear cutting machines, and has for its object to provide an improved indexing device adapted to advance the blank with absolute accuracy and precision with a step by step movement.

A further object of the invention is to provide in an improved indexing device a clutch adapted to throw the mechanism into and out of operation and associated parts whereby Vthe clutch remains out of operative engagement until the cutting has ceased upon the blank, and whereby no further cutting performed while the indexing mechanism is in operation, and whereby the clutch, whenever in operative engagement, remains in complete engagen'ient until the blank is advanced to proper position, and is there firmly locked.

A further object of the invention is to provide in an indexing' device novel means for advancing a blank with a step by step movement, and a positive lock adapted to maintain the blank against rotary movement in eitheiI direction for being advanced and while being operated upon.

lith these and other objects in view the invention comprises certain novel constructions, conibinations and arrangen'ients of parts as will be hereinafter fullyv described and claimed.

In the drawiiigsk-Figure 1 is a view in side elevation of the improved indexing device with the casing broken away. Fig. 2 is a view in end elevation of the operating parts of the improved indexing' device with the casing broken away as on line 2-2 of Fig. 1. Fig. 3 is a view in end elevation of the operating parts of the improved indexing device with the casing broken away as on line 3-3 of Fig. 1. Fig. 4 is an inverted plan as seen along arrow 4 of Fig. 1. Fig. 5 is a transverse, sectional view on a horizontal plane taken on line 5--5 of Fig. 1. Fig'. 6 is a view on a vertical plane showing Specification of Letters Patent.

Application led January 16. 1908.

Patented Sept. 27, 1910.

serian No. 411,186.

part of the operating mechanism in elevation and taken on line G-G of Figs. 2, 3, 4 and Fig. 7 is a detail view of the trip-pin and associated cams. Fig. 8 is a detail view in side elevation of the mechanism designed to close the clutch. Fig. 9 is a view in side elevation of a modified form of operating cam. Fig. 10 is a transverse detail sectional view as indicated by line 10-10 at Figs. 4, 5 and G.

Like characters of reference designate corresponding pa-rts throughout the several views.

The indexing device forming the subjectmatter of this application comprises a cas-` ing 10 of any approved size and shape and secured to a gear cutting machine in any approved manner. Through and journaled in the casing 10 is a shaft 11 to which is applied power from the source used to operate the gear cutting' apparatus or from any approved source. Within the casing a pinion 12 is rigidly mounted upon the shaft 11 intergeared with a gear 13 loosely mounted upon the shaft 14 journaled in the casing 10 in parallelism with the shaft 11. Upon the shaft 14 is also mounted a clutch member 15 slidable longitudinally upon the said shaft and maintained against rotary displacement thereon in any usual and well known manner as by means of the feather 16. The clutch member 15 is provided with any approved form of clutch teeth 17 adapted to interengage with similar butreversely inclined clutch teeth 18 carried rigidly upon or integral with the face of the gear 13.

It will be understood that when the clutch member 15 is slidably moved to bring its teeth 17 into operative engagement with the teeth 18 of the gear 13 the shaft 14 will rotate with the gear 13 and thereupon is mounted a pinion 19 intergeared with a gear 2() mounted rigidly upon a shaft 21 journaled in the casing 10 in parallelism with the shafts 11 and 14 and having an end extending through and without the casing upon which is mounted any approved form of transmitting mechanism, as one of a train of gears transmitting movement to the blank. Upon the shaft 21 is also mounted a pinion 22 intergeared with a gear 23 rigidly mounted upon a shaft 24 journaled in the casing in parallelism with the shafts 11, 14 and 21.

For operating the clutch member 15 a yoke 25 is fulcrumed in any approved manner upon the casing 10, as by means of the ears 26 and pin 27 and having its spaced or bifurcated ends provided with lugs 2S engaging an annular groove 29 formed about the periphery of the clutch member 15.

It will be readily understood that as the yoke 25 is moved upon its pin 27 the clutch member 15 is thereby moved into and out of engagement with the gear 13 and for operating such yoke a plunger rod 30 is slidably mounted in the casing 10 and provided with an arm 31 rotatably mounted thereon by means of a pin 31 inserted through the periphery of the rod 30 and disposed beneath an o-set portion 32 of the yoke and adapted to lift the yoke when said arm 31 is moved rotatably on plunger rod 30. Upon the plunger rod 3() is also mounted a lug 33 having an inclined side 34 positioned to ride up an incline 35 upon the yoke member 25 and to force the yokedownwardly when the plunger rod 30 is moved longitudinally in the direction indicated by the arrow.

F or moving the plunger rod 30 longitudinally a lever 36 is journaled as at 37, and provided with a pin 38 rigidly carried thereby and engaging an opening 39 in an arm 40, which said arm 40 is rigidly mounted upon a sleeve 41 embracing the plunger rod 30. It will be understood that when the lever 36 is moved angularly upon its pivot 37 motion is communicated thereby through the pin 33 and arm 40 to produce longitudinal movement of the plunger rod 30.

Angular movement of the lever 36 is produced by means of a shaft 42 having an abutment 43 mounted adjustably thereon in any approved manner as by the screw 44 and adapted to engage a spring actuated detent 45 carried by said lever 36 and having an inclined face 46 adapted to slide over an inclined face 47 upon the abutment 43. The shaft- 42 extends outwardly through the casing 10 and is provided with adjustable abutments 48 and 49 adapted to engage with or be engaged by a lug 50 which remains stationary if the indexing device moves with the moving parts of the machine or moves with the moving parts of the head if the indexing device remains stationary, de-pendent upon the type and style of machine upon which the indexing device is employed. Upon the shaft 21 is also mounted a cam 51 having a shoulder 52 positioned to be engaged by the extremity, as 53 of the lever 36 and by which the shaft 21 and its associated train of gears or other transmitting mechanism is held rigidlyl against movement in the direction of travel indicated by the arrow.

The extremity 53 of the lever 36 is thrown into position for engaging the shoulder 52 by means of lugs 54, 54 and 54 spaced l about a sleeve 55 rigidly mounted upon the shaft 24. The lugs 54, 54 and 54 are positioned to engage a detent 56 extending into the path of movement of said lugs from a pin 57 slidably mounted in the lever 36 and movable in parallelism with the shafts 24 and 37. The pin 57 is manipulated by means of a head 53 and is maintained in position by means of spaced notches 59 eugaged by a spring-pressed detent 60, shown particularly in Fig. 7. 1t will be understood that when the shaft 42 is moved in the direction of the arrow the lever 36 will be moved to disengage the extremity 53 from the shoulder 52 and that the lever 36 will be returned to such enga-ging position by means of the cams 54, 54 and 54H engaging the lug 56.

Rotary movement is imparted to the arm 31 for the movementout of gear of the clutch member 15, by means of an arm 61 connected with and preferably extending opposite to and rigid with the arm 31. Carried by the shaft 14 and preferably upon the under side of the gear 19 is a cam 62 so positioned that when the gear 19 is rotated in the direction indicated by the arrow, and the arm 61 is in position to be engaged by the said cam 62, the arm 61 will be depressed, thereby rotating the sleeve on the plunger rod 30 and lifting the arm 31 and therewith the arm 32 and the yoke 25 and the clutch member 15 actuated thereby.

The gear 20, as will. plainly be seen from Fig. 1, is mutilated, having a space, as at 63, without teeth and interengaging cams 64 and 65 are carried, respectively, by the gears 20 and 19, to permit of a limited movement of the gear'19 without moving the gear 20, so that after the shoulder 52 of the cam 51 has engaged the extremity 53 of the lever 36 and broughtthe said cam 51 and its associated gear 2O to rest, the pinion 19 may be moved in the direction indicated by the arrow to.

permit the cam 62 to operate the arm 61, and throw the clutch mechanism out of operative engagement.

Vith the parts disposed as shown in the drawings, the power applied to shaft 11 will rotate the said shaft 11, and the pinion 12, and gear 13, in the directions indicated by the several arrows, and by reason of the clutch being separated the gear 13 will rotate freely upon the said shaft without operatingany other mechanism.

It will be assumed that the indexing device herein described moves with the moving parts of the gear cutting machine and that the lug 50 remains stationary, although, as heretofore stated, the indexing device may remain stationary and the lug 50 moved with the moving parts of the mechanism. Vhen the indexing device moves in the direction indicated by arrow A the abutment 49 will contact with the lug 50 and the rod 42 will be moved relative to the casing in the direction indicated by arrow B. The movement of the rod 42, as indicated, will move the lever 36 angularly upon its pivot 37 to disengage the extremity 53 from the shoulder 52 of the cam 51 and at the same time will move the plunger rod 30 in the direction indicated by arrow C. rIhe movement of the shaft 30, as indicated, will remove the arm 61. from beneath the cam 62, thus leaving the arm 61 and its rigidly associated arm 31 free to rotate and its continued longitudinal movement will cause the lug 33 to ride up the incline 35 and force the yoke 25 downwardly, forcing thereby the clutch member 15 into engagement with the teeth 13 upon the gear 13, which is positively driven, as above described, through the medium of the pinion 12 and shaft 11. rIhe engagement of the clutch will cause the gear 19 to rotate and the cam 65 to engage the cam 64 and move the gear 20 into position so that the said gear 20 intergears with the gear 19 and is rotated thereby. The gears 20 and 19 are, respectively, two to one so that the gear 20 rotates once for each two revolutions of the gear 19 when intergeared. The rotation of the gear 20 rotates the shaft 21 to which is secured the transmitting means thereby operating and advancing the blank.

The rotation of the shaft 21 rota-tes the pinion 22, which, being intergeared with the gear 23, the said gear 23 is also rotated. It will be noted, especially from Fig. 7, that the cams 54, 54 and 54 carried by the sleeve 55 upon the shaft 24 differ in length. The cams 54 diametrically disposed are similar in length and are shorter than the cam 54, which is in turn exceeded in length by the cam 54. lVith the parts disposed as shown in Fig. 7, the detent 56 is not engaged by either of the cams 54, 54 or 54, and the device would operate in gear indefinitely. lVith the pin 57 raised, however, so that the detent 60 engages the first of the series of notches 59, the detent 56 will engage the cam 54 and will be operated once during each rotation of the gear 23. The gear 23 and the pinion 22 are, respectively, four to one so that the shaft 21 is rotated four times before the cam 54 engages the detent 56 and moves the lever 36 angularly to engage and stop the cam 51. ith the pin 57 raised another notch the detent 56 engages the cams 54 and 54 and the lever 36 is moved at each half revolution of the gear 23, or at the end of two complete revolutions of the gear 20. IVith the pin 57 raised another notch the detent 56 engages all of the cams 54, and 54 and 54, and the lever 36 is operated at each quarter revolution of the gear 23, or each complete revolution of the gear 20. In this manner it will be seen that the train of gear connecting the Shaft 21 with the blank will not be subjected to as many changes as in case the device is operated without change.

Instead of employing the cams 54, 54 and 54 the gear 23, as shown at 23 in Fig. 9, may be provided with a plurality of cam grooves 66, 66 and 66 corresponding, respectively, in their operation with the cams 54, 54 and 54, the said grooves having abutments 67, 57 and 67, by which the lever 36 is operated. It will be noted that the cam groove 66 is provlded with four of the cams 67, the groove 66 with two of the cams 67 and the groove 66 with but one of the cams 67. y

Then the cams 54 or 67 engage the detent 56 the lever 36 is thrown into the position shown in the drawings and in the manner above described, the arms 31-61 are rotatably moved upon rod 30 to disengage the clutch member 15, which permits the movement of the shaft 11 free from operating the indexing device while the gear cutting mechanism is in operation and until a gear tooth is produced. The moving parts of the gearcutting mechanism then operate rod 42. and the operation of the indexing device as above described, is repeated.

that I claim is 1. In an indexing device, a driven shaft, a driving shaft, means for intergearing the shafts, a clutch interposed in the intergearing, a longitudinally movable member to throw the clutch into engagement and carrying means adapted when moved rotatably to throw the clutch out of engagement, means actuated from the driven shaft and arranged to move rotatably the means carried by the longitudinally movable member, and means arranged to actuate the longitudinally movable member.

2. In an indexing device, the combination with a movable part, of a driven shaft, a

driving shaft, means for intergcaring the shafts, a clutch interposed in the intergearing, a yoke adapted to operate the clutch, an angularly movable arm, a longitudinally movable member provided with a lug arranged to engage the yoke when moved longitudinally to throw the clutch into engagement said arm tending to throw the clutch out of engagement, when moved angularly, means operated from the driven shaft and arranged to move the said arm angularly, and means actuated from the movable part to impart longitudinal movement to the member.

3. In an indexing device, the combination with a movable part, of driven shaft, a driving shaft, means intergearing with the shafts, a locking 'means interposed in the gearing, a plunger rod adapted when moved longitudinally to throw the locking means into engagement, carrying means adapted when moved rotatably to throw the locking means out of engagement, means actuated from the driven shaft and adapted to move rotatably the means carried by the plunger rod, and means actuated from the movable part to move the plunger rod longitudinally.

el. In an indexing device, a driven shaft, a driving shaft, means intergearing the shafts, a clutch interposed in the intergearing, a plunger rod adapted when moved longitudinally to throw the clutch into engagement and carrying means adapted when moved rotatably to throw the clutch out of engagement, means actuated from the driven shaft adapted to lnove rotatably the means carried by the plunger rod and means actuated from the moving part adapted to move the plunger rod longitudinally.

5. In an indexing device, the combination with moving part, of a driven shaft, a driving shaft, means intergearing the shafts, a clutch interposed in the intergearing, a yoke adapted to operate the clutch, a plunger rod provided with a lug adapted to engage the yoke when moved longitudinally to throw the clutch into engagement and with an arm adapted when moved angularly to throw the clutch out of engagement, means operated from the driven shaft adapted to move the plunger rod carried arm angularly, and means actuated from the moving part to move the plunger rod longitudinally.

6. In an indexing device, the combination with a moving part, of a driven shaft, of a driving shaft, means intergearing the shafts, a clutch interposed in the intergearing, a sleeve adapted to receive rotary motion from the driving shaft, a plurality of cams carried by the sleeve, a lever adapted to actuate the clutch, and means carried by the lever adapted to engage a predetermined number of the cams carried by the sleeve.

7. In an indexing device, a driven shaft, a driving shaft, means intergearing the shaft, a clutch interposed in the intergearing, means adapted to actuate the clutch, a sleeve adapted to receive rotary motion from the driving shaft, a plurality of cams spaced about the sleeve, a lever adapted to actuate the clutch actuating mechanism, and adjustable means carried by the lever adapted to engage a predetermined number of the cams.

8. In an indexing device, the combination with a moving part, of a driven shaft, a drivinO' shaft, means intergearing the shafts, a clutch interposed in the intergearing, means adapted to actuate the clutch, a lever positioned to actuate the clutch operating mechanism, a sleeve adapted to receive rotary motion from the driving shaft, a plurality of cams carried by the sleeve, means carried adjustably by the lever adapted to engage with a predetermined number of cams, and to move the lever in one direction, and means operated from the moving part adapted to move the lever in the opposite direction.

9. In an indexing device, the combination with a moving part, of a driven shaft, a driving shaft, means intergearing the shafts, means adapted to disconnect the intergearing, a disk carried by the driving shaft, and provided with a stop, a lever positioned to engage the stop of the disk and to actuate the gear disconnecting means, a sleeve mounted to receive rotary motion from the driving shaft, a plurality of cams spaced about the sleeve, and means carried by the lever adapted to engage a predetermined number of the cams, and to move the lever to engage the disk, and means actuated by the moving part adapted to move the lever in the opposite direction.

10. rIhe combination with a gear cutting machine, having a moving part, of an indexing device mounted thereon, and comprising a shaft driven from the gear cutting machine, a driving Vshaft intergeared with the driven shaft, a clutch interposed in the intergearing, a plunger rod mounted to reciprocate and provided with a sleeve adapted to rotate a limited distance, means carried by the sleeve adapted to throw the clutch out of engagement when rotated, means carried by the plunger rod adapted to throw the clutch into engagement when moved longitudinally, a disk carried by the driving shaft and provided with a stop, a lever adapted to engage with the stop and move the plunger rod longitudinally, a sleeve adapted to receive rotary motion from the driving shaft, a plurality of cams spaced about the sleeve, means carried by the lever adapted to engage a predetermined number of the cams and to move the rod into engagement with the disk, means adapted to engage the moving parts of the machine and to move the lever in the opposite direction, and a cam adapted to move the plunger rod to throw the clutch out of engagement.

ll. The combination with a gear cutting machine having a moving part, of an indexing device mounted upon said machine, a shaft ournaled in said indexing device and receiving motion from the machine, a driving shaft journaled in the indexing device, a counter shaft journaled between the driven shaft and driving shaft, gears carried by the counter shaft and intergeared with the driven shaft and driving i shaft, a clutch mounted to reciprocate longitudinally upon the counter shaft and to engage to operate the gear, a yoke pivotally mounted and adapted to move the clutch, a plunger rod, means carried by the plunger rod for throwing the clutch into engagement when moved longitudinally, means carried by the plunger rod adapted to throw the clutch out of engagement when moved rotatably, a disk carried by the driving shaft, and provided with a stop, a lever mounted for engagement with the disk, and to move the plunger rod longitudinally, a sleeve mounted to receive rotary motion from the driving shaft, a plurality of cams carried by the sleeve, means carried by the lever adapted to engage a predetermined number of the cams, and to throw the lever into engagement with the disk, a plunger rod provided with a tappet positioned to engage the lever, and means carried by the last-mentioned plunger' rod adapted to engage the moving part and to throw the lever out of engagement.

12. In an indexing device, the combination with a movable part, of a driven shaft, a driving Shaft, means for intergearing the shafts, a clutch interposed in the inter-gearing, a longitudinally movable member to throw the clutch into engagement, and carrying means adapted when moved rotatably to throw the clutch out of engagement, means actuated from the driven shaft and adapted to move rotatably the means carried by the longitudinally movable member, and means actuated from the moving part and arranged to move the longitudinally movable member.

13. In an indexing device, the combination with a movable part, of a driven shaft, a driving shaft, means intergearing with the shafts, a clutch interposed in the intergearing, means adapted to operate the clutch, an arm arranged when moved longitudinally to throw the clutch out of engagement, a plunger rod provided with a lug arranged to engage the clutch operating means when moved longitudinally to throw the clutch into engagement, means operated from the driven shaft to move the plunger rod, and means actuated from the moving part to move the plunger rod longitudinally in the opposite direction.

lll. In an indexingl device, the combination with a movable part, of a driven shaft, a driving shaft, means intergearing the shafts, means arranged to disconnect the intergearing, a member carried by the driving shaft and provided with a slot, a lever positioned to engage the slot and to actuate the gear disconnecting means, a sleeve mounted to receive rotary motion from the driving shaft, a plurality of cams carried by the sleeve7 a Stop carrying member, means carried by the lever and shaft to engage a predeterniined number of cams and to move the lever to engage the stop carrying member, and means actuated by the moving part to move the lever in the opposite direction.

In testimony whereof I affix my signature in presence of two witnesses.

BYRON F. MORRILL.

litnesses HLMAM C. SMALL, VILLIAM Pl. SHoRns. 

